CN106476356A - A kind of flaxen fiber strengthens Rigid foam polyurethane and preparation method thereof - Google Patents
A kind of flaxen fiber strengthens Rigid foam polyurethane and preparation method thereof Download PDFInfo
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- CN106476356A CN106476356A CN201611143580.5A CN201611143580A CN106476356A CN 106476356 A CN106476356 A CN 106476356A CN 201611143580 A CN201611143580 A CN 201611143580A CN 106476356 A CN106476356 A CN 106476356A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
- B32B5/22—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed
- B32B5/24—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer
- B32B5/26—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer another layer next to it also being fibrous or filamentary
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
- B32B37/06—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the heating method
- B32B37/065—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the heating method resulting in the laminate being partially bonded
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
- B32B37/10—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the pressing technique, e.g. using action of vacuum or fluid pressure
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2260/00—Layered product comprising an impregnated, embedded, or bonded layer wherein the layer comprises an impregnation, embedding, or binder material
- B32B2260/02—Composition of the impregnated, bonded or embedded layer
- B32B2260/021—Fibrous or filamentary layer
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2260/00—Layered product comprising an impregnated, embedded, or bonded layer wherein the layer comprises an impregnation, embedding, or binder material
- B32B2260/04—Impregnation, embedding, or binder material
- B32B2260/046—Synthetic resin
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
- B32B2262/02—Synthetic macromolecular fibres
- B32B2262/0261—Polyamide fibres
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
- B32B2262/06—Vegetal fibres
- B32B2262/062—Cellulose fibres, e.g. cotton
- B32B2262/065—Lignocellulosic fibres, e.g. jute, sisal, hemp, flax, bamboo
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
- B32B2262/10—Inorganic fibres
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
- B32B2262/10—Inorganic fibres
- B32B2262/101—Glass fibres
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
- B32B2262/10—Inorganic fibres
- B32B2262/106—Carbon fibres, e.g. graphite fibres
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2457/00—Electrical equipment
- B32B2457/10—Batteries
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2605/00—Vehicles
- B32B2605/08—Cars
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2605/00—Vehicles
- B32B2605/12—Ships
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2605/00—Vehicles
- B32B2605/18—Aircraft
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- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Laminated Bodies (AREA)
Abstract
The invention discloses a kind of flaxen fiber strengthens composite plate and preparation method thereof, belong to automotive material and manufacture and design field.Described composite plate is the structure of two-layer panel layer laminboard layer, and described sandwich layer is constituted by as the shredding flaxen fiber of skeleton and the polyurathamc in filling skeleton space.Preparation method is first to lay the bast fibre felt of smart shredding on panel layer, then sprays polyurethane on bast fibre felt, then lays an aspect flaggy above, and then heated sizing and cooling obtains product.Flaxen fiber that the present invention is obtained strengthens composite plate with multilayer structure and has that good environmental protection, light weight, stiffness and strength be high, energy absorption performance is good, of many uses.Can be widely applied to the fields such as automobile, rail vehicle, Aero-Space, building, decoration, packaging, have a good application prospect, be a kind of light multifunction environment-friendly type flaxen fiber composite.
Description
Technical field
The invention belongs to automotive material manufactures and designs field.
Background technology
With social progress, people improve constantly to demands such as environmental protection, energy-saving material-savings, to automobile and automotive upholstery material
The requirement also more and more higher of material, Market competition.Lightweight is the trend of development of automobile, and therefore lightweighting materials are on automobile
Application also will be more and more universal.Flaxen fiber, as organic material, has good performance, and environmental protection.Now common
Linen fiber composite plates be all using panel between direct loading fill material composition.Such linen fiber composite plates, in mechanical property
On there is no enough rigidity and intensity.
Content of the invention
For the problem that existing linen fiber composite plates mechanical property is not enough, the present invention proposes to increase between double face slab
A kind of flaxen fiber strengthens polyurethane as intermediate layer, to realize a new flaxen fiber and to strengthen Rigid foam polyurethane.
Flaxen fiber in the present invention strengthens Rigid foam polyurethane using by the intermediate course structure between two-layer panel and two panels
Become, wherein panel is linen fiber composite plates, flaxen fiber composite felt, carbon fiber composite board, aramid fiber composite plate, basalt fibre
In composite plate, and fiberglass composite plate 1~2 kind, intermediate course by by as skeleton shredding flaxen fiber and filling bone
The polyurathamc of built on stilts gap is constituted;Described polyurethane is hard polyurethane foam material;Shredding flaxen fiber is opened preferably through essence
80~100mm flaxen fiber of pine.
Shredding flaxen fiber is the flaxen fiber processing through smart shredding;Linen fiber composite plates and flaxen fiber composite felt are preferably by matter
The amount fibrous composite plate that the modified polypropylene fiber than 60% is composited than the china-hemp fibers for 40% or composite felt.
Flaxen fiber strengthens the preparation method of Rigid foam polyurethane, comprises the following steps that:
Step one, the first bast fibre felt laid on linen fiber composite plates through smart shredding;
Step 2, on bast fibre felt spray polyurethane, obtain sandwich layer;Described polyurethane adopts hard polyurethane foam material
Material, flaxen fiber with the mass ratio of polyurethane is, flaxen fiber 30~50%, polyurethane 50~70%.
Step 3, again one layer of linen fiber composite plates of laying on sandwich layer;
Step 4 and then in 120 DEG C~140 DEG C, 0.5~5MPa pressure hot pressing 30~100s molding.
Obtain flaxen fiber after step 5, cooling and strengthen Rigid foam polyurethane.
Step 6, to flaxen fiber strengthen Rigid foam polyurethane cut, obtain same size size flaxen fiber strengthen
Rigid foam polyurethane.
Beneficial effects of the present invention:
, due to employing the mode of sandwich layer reinforcement, in the case of same quality, its Out-of Plane Stiffness is more preferable for this composite plate.Should
There is plastic deformation when small deformation (little impact) in composite, deform and can recover after external force disappears.And when large deformation, by
In the tensile characteristics of fibrous material, there is the feature of ductile rupture, in addition polyurethane foam material also has good energy absorption capacity
Can, therefore this composite has good energy absorption characteristics, is applied to the safety that will be helpful on automobile improve vehicle.
The spy such as this composite plate has good environmental protection, light weight, Out-of Plane Stiffness intensity is high, energy absorption performance is good, of many uses
Point.Can be widely applied to the fields such as automobile, hull, aircraft, building, furniture, decoration, packaging, cell package, high-pressure bottle,
Have a good application prospect.
Brief description
Fig. 1 production line flow process figure;
Fig. 2 production line flow process front view;
The partial enlarged drawing of Fig. 3 production line flow process front view.
Fig. 4 composite plate schematic diagram;
Fig. 5 composite plate schematic diagram.
Specific embodiment
Embodiment 1
In the present embodiment, flaxen fiber enhancing Rigid foam polyurethane preparation method is as follows:
Step one, the first bast fibre felt that smart shredding is laid on linen fiber composite plates;
Step 2, on bast fibre felt spray polyurethane, obtain sandwich layer;Described polyurethane adopts hard polyurethane foam material
Expect, flaxen fiber with the mass ratio of polyurethane is:Flaxen fiber 30%, polyurethane 70%.
Step 3, again one layer of linen fiber composite plates of laying on sandwich layer;
Step 4 and then in 120 DEG C~140 DEG C, 0.5~5MPa pressure hot pressing 30~100s molding.
Obtain flaxen fiber after step 5, cooling and strengthen Rigid foam polyurethane.
Step 6, to flaxen fiber strengthen Rigid foam polyurethane cut, obtain same size size flaxen fiber strengthen
Rigid foam polyurethane.
Finally obtained flaxen fiber strengthens polyurethane composite board structure as shown in Figure 4 and Figure 5, and the present invention adopts two aspects
The composite construction of flaggy laminboard layer, in the present embodiment, panel layer can select linen fiber composite plates, fiber crops according to needed for actual performance
Fiber composite felt, carbon fiber composite board, aramid fiber composite plate, basalt fibre composite plate, and in fiberglass composite plate
One or two kinds of combination, if selecting the Fructus Cannabis that linen fiber composite plates or flaxen fiber composite felt are preferably 40% by mass ratio
Fibrous composite plate or composite felt that fiber and 60% modified polypropylene fiber are composited, can add fire-retardant as needed
Agent, coupling agent etc. improves the performance of panel.The flaxen fiber shredding degree of smart shredding, with ultimate fibre overwhelming majority independent separate, is formed
The flaxen fiber cluster of smart shredding is defined.
As shown in FIG. 1 to 3, it is that the present invention prepares the production line that flaxen fiber strengthens Rigid foam polyurethane.First
It is divided into lowermost fibre plate laying apparatus 1, for laying lower floor's linen fiber composite plates;Part II is flaxen fiber refined opener 2, will
It is laid on lower floor's linen fiber composite plates through the bast fibre felt of smart shredding, Part III is polyurethane foaming equipment 3, by poly- ammonia
Ester sprays on bast fibre felt, and Part IV is used for laying upper strata linen fiber composite plates for top fiber plate laying apparatus 4, and the 5th
Part be heat-shaping equipment 5,120 DEG C~140 DEG C, 0.5~5MPa pressure hot pressing 30~100s carry out heat-shaping process.
Part VI is cooling device 6, the flaxen fiber of molding is strengthened Rigid foam polyurethane and is cooled to room temperature, after through cutting device 7
Flaxen fiber after cooling is strengthened Rigid foam polyurethane and cuts into equal-specification size.
Embodiment 2
Step one, the first bast fibre felt laid on linen fiber composite plates through smart shredding;
Step 2, on bast fibre felt spray polyurethane, obtain sandwich layer;Described polyurethane adopts hard polyurethane foam material
Expect, flaxen fiber with the mass ratio of polyurethane is:Flaxen fiber 40%, polyurethane 60%.
Step 3, again one layer of linen fiber composite plates of laying on sandwich layer;
Step 4 and then in 120 DEG C~140 DEG C, 0.5~5MPa pressure hot pressing 30~100s molding.
Obtain flaxen fiber after step 5, cooling and strengthen Rigid foam polyurethane.
Step 6, to flaxen fiber strengthen Rigid foam polyurethane cut, obtain same size size flaxen fiber strengthen
Rigid foam polyurethane.
Embodiment 3
Step one, the first bast fibre felt laid on linen fiber composite plates through smart shredding;
Step 2, on bast fibre felt spray polyurethane, obtain sandwich layer;Described polyurethane adopts hard polyurethane foam material
Expect, flaxen fiber with the mass ratio of polyurethane is:Flaxen fiber 50%, polyurethane 50%.
Step 3, again one layer of linen fiber composite plates of laying on sandwich layer;
Step 4 and then in 120 DEG C~140 DEG C, 0.5~5MPa pressure hot pressing 30~100s molding.
Obtain flaxen fiber after step 5, cooling and strengthen Rigid foam polyurethane.
Step 6, to flaxen fiber strengthen Rigid foam polyurethane cut, obtain same size size flaxen fiber strengthen
Rigid foam polyurethane.
The bast fibre felt of above example essence shredding is obtained through smart shredding by the flaxen fiber of 80~100mm.
Compliance test result
Content according to filling flaxen fiber is different, measures data, is analyzed:Obtained impact strength and stretching
Strength character data is as shown in table 1,
Table 1
The content of natural fiber in polyurethane sandwich layer | 0% | 30% | 40% | 50% |
Impact strength (KJ/m2) | 11 | 14 | 16 | 19 |
Tensile strength (MPa) | 90 | 180 | 200 | 210 |
Shown by experimentation, the mechanical property that the flaxen fiber after fiber reinforcement strengthens Rigid foam polyurethane is substantially better than
Do not pass through fibre-reinforced similar Rigid foam polyurethane, its impact strength increases up to more than 60%.
Claims (6)
1. a kind of flaxen fiber strengthens Rigid foam polyurethane, is made up of the intermediate course between two-layer panel and two panels, its feature exists
In described panel is linen fiber composite plates, flaxen fiber composite felt, carbon fiber composite board, aramid fiber composite plate, basalt are fine
In dimension composite plate, and fiberglass composite plate 1~2 kind;Described intermediate course by as skeleton shredding flaxen fiber and
The polyurathamc in filling skeleton space is constituted.
2. flaxen fiber according to claim 1 strengthens Rigid foam polyurethane it is characterised in that panel layer linen fiber composite plates
Or flaxen fiber composite felt.
3. flaxen fiber according to claim 2 strengthen Rigid foam polyurethane it is characterised in that described linen fiber composite plates and
Flaxen fiber composite felt is the fiber composite being composited than 60% modified polypropylene fiber by the china-hemp fibers that mass ratio is 40%
Plate or composite felt.
4. flaxen fiber according to claim 1 strengthens Rigid foam polyurethane it is characterised in that described polyurethane gathers for hard
Urethane expanded material.
5. flaxen fiber according to claim 1 strengthens Rigid foam polyurethane it is characterised in that described shredding flaxen fiber is
80~100mm flaxen fiber through smart shredding.
6. flaxen fiber as claimed in claim 1 strengthens the preparation method of Rigid foam polyurethane, comprises the following steps that:
Step one, the first bast fibre felt laid on linen fiber composite plates through smart shredding;
Step 2, on bast fibre felt spray polyurethane, obtain sandwich layer;Flaxen fiber with the mass ratio of polyurethane is, flaxen fiber 30
~50%, polyurethane 50~70%;
Step 3, again one layer of linen fiber composite plates of laying on sandwich layer;
Step 4 and then in 120 DEG C~140 DEG C, 0.5~5MPa pressure hot pressing 30~100s molding;
Obtain flaxen fiber after step 5, cooling and strengthen Rigid foam polyurethane.
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Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN107443829A (en) * | 2017-09-12 | 2017-12-08 | 吉林大学 | Flaxen fiber braiding enhanced foaming sandwich structure composite material of suture connection and preparation method thereof |
CN108582908A (en) * | 2018-04-24 | 2018-09-28 | 吉林大学 | A kind of bamboo fiber reinforcement polycaprolactone composite plate and preparation method thereof containing argy wormwood |
WO2022141831A1 (en) * | 2020-12-31 | 2022-07-07 | 泰州市华丽新材料有限公司 | High-strength fireproof board, a wear-resistant fireproof veneer using same as base material, and manufacturing method |
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US5037690A (en) * | 1987-11-27 | 1991-08-06 | De Groot Automotives, B.V. | Shaped product comprising a thermoset, foamed, plastics sheet material reinforced with coherent natural-fibre material, and a process for making the shaped product |
CN104002879A (en) * | 2014-05-27 | 2014-08-27 | 长城汽车股份有限公司 | Automobile spare tire cover plate and processing process and processing device thereof |
CN104742460A (en) * | 2015-04-15 | 2015-07-01 | 洛阳双瑞橡塑科技有限公司 | Passenger car floor of sandwich structure |
CN206277734U (en) * | 2016-12-13 | 2017-06-27 | 长春博超汽车零部件股份有限公司 | A kind of flaxen fiber strengthens Rigid foam polyurethane |
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2016
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US5037690A (en) * | 1987-11-27 | 1991-08-06 | De Groot Automotives, B.V. | Shaped product comprising a thermoset, foamed, plastics sheet material reinforced with coherent natural-fibre material, and a process for making the shaped product |
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CN104742460A (en) * | 2015-04-15 | 2015-07-01 | 洛阳双瑞橡塑科技有限公司 | Passenger car floor of sandwich structure |
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Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN107443829A (en) * | 2017-09-12 | 2017-12-08 | 吉林大学 | Flaxen fiber braiding enhanced foaming sandwich structure composite material of suture connection and preparation method thereof |
CN108582908A (en) * | 2018-04-24 | 2018-09-28 | 吉林大学 | A kind of bamboo fiber reinforcement polycaprolactone composite plate and preparation method thereof containing argy wormwood |
CN108582908B (en) * | 2018-04-24 | 2023-11-17 | 吉林大学 | Bamboo fiber reinforced polycaprolactone composite board containing mugwort and preparation method thereof |
WO2022141831A1 (en) * | 2020-12-31 | 2022-07-07 | 泰州市华丽新材料有限公司 | High-strength fireproof board, a wear-resistant fireproof veneer using same as base material, and manufacturing method |
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Application publication date: 20170308 |